CN210367272U - Heavy metal wastewater treatment device - Google Patents
Heavy metal wastewater treatment device Download PDFInfo
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- CN210367272U CN210367272U CN201921184925.0U CN201921184925U CN210367272U CN 210367272 U CN210367272 U CN 210367272U CN 201921184925 U CN201921184925 U CN 201921184925U CN 210367272 U CN210367272 U CN 210367272U
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Abstract
Heavy metal effluent treatment plant, including the waste water equalizing basin, the acidizing pond, sulphuric acid elevated tank, the reduction reaction pond, neutralization pond and sedimentation tank, the waste water equalizing basin delivery port links to each other with the acidizing pond, sulphuric acid elevated tank is located the acidizing pond top, the acidizing pond delivery port links to each other with the reduction reaction pond, reduction reaction pond top installation loading hopper, the reduction reaction pond delivery port links to each other with the neutralization pond, the neutralization pond delivery port links to each other with the sedimentation tank, sedimentation tank top installation polyacrylamide charge tank, sedimentation tank middle part delivery port links to each other with the filter import. The utility model discloses an add sulphuric acid and carry out the reduction to heavy metal waste water, make wherein high valence metal ion reduce into low valence metal ion, and the metallic hydrate that generates through alkali neutralization again deposits and detach, and investment and working costs are lower, and easy operation, field sustainability treatment waste water is applicable to the heavy metal waste water treatment of trades such as electroplating industry and printing and dyeing, pharmacy, light industry weaving, chemical industry.
Description
Technical Field
The utility model relates to an industrial waste water environmental protection processing technology field, concretely relates to heavy metal wastewater treatment device.
Background
At present, heavy metal wastewater mainly comes from metal processing enterprises such as metal electroplating industry, steel manufacturing industry and the like, and contains metal impurities such as copper, chromium and the like which are difficult to treat, wherein harmful components in chromium metal mainly comprise hexavalent chromium ions such as soluble sodium chromate, acid-soluble calcium chromate and the like. These hexavalent chromium and its leaching diffusion constitute a pollution hazard to the ecological environment. Secondly, the strong alkaline harm of the chromium slag. When the chromium slag is stockpiled in the open air, a large amount of hexavalent chromium ions are dissolved, lost and seeped into the ground surface along with rainwater after long-term rainwater washing, so that underground water is polluted, rivers and lakes are polluted, and farmlands, aquatic products and human health are further harmed. In the prior art, the membrane separation method and the biological method are mainly used for treating hexavalent chromium, but the use cost is high and the operation is difficult.
Disclosure of Invention
The utility model provides a heavy metal wastewater treatment device to solve the problem that the treatment cost that prior art exists is higher and troublesome to operate.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a heavy metal wastewater treatment device, including the waste water equalizing basin, the acidizing pond, sulphuric acid elevated tank, the reduction reaction pond, neutralization pond and sedimentation tank, the waste water equalizing basin delivery port links to each other with the acidizing pond, sulphuric acid elevated tank is located the acidizing pond top, the acidizing pond delivery port links to each other with the reduction reaction pond, reduction reaction pond top installation loading hopper, reduction reaction pond delivery port links to each other with the neutralization pond, neutralization pond delivery port links to each other with the sedimentation tank, sedimentation tank top installation polyacrylamide charge tank, sedimentation tank middle part delivery port links to each other with the filter import.
The utility model discloses a theory of operation is: discharging the heavy metal wastewater into a wastewater adjusting tank, and uniformly mixing; introducing the uniformly mixed wastewater into an acidification tank, adding sulfuric acid through a sulfuric acid head tank for acidification, and controlling the pH value to be about 2.5; introducing the acidified liquid into a reduction reaction tank, and adding sodium bisulfite through a charging hopper to perform reduction reaction; introducing the reduced wastewater into a neutralization tank, adding sodium hydroxide into the neutralization tank for neutralization under the stirring state, adjusting the pH value to 7.5-8.5, then introducing the neutralized water into a sedimentation tank, adding polyacrylamide into the wastewater through a polyacrylamide feeding tank for sedimentation, introducing the wastewater in the middle of the sedimentation tank into a filter after solid-liquid separation of the sediment, and discharging the wastewater after physical adsorption and filtration.
The utility model discloses an add sulphuric acid and carry out the reduction to heavy metal waste water, make wherein high valence metal ion reduce into low valence metal ion, and the metallic hydrate that generates through alkali neutralization again deposits and detach, and investment and working costs are lower, and easy operation, field sustainability treatment waste water is applicable to the heavy metal waste water treatment of trades such as electroplating industry and printing and dyeing, pharmacy, light industry weaving, chemical industry.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a process flow diagram of the apparatus of the present invention.
In the figure, a waste water adjusting tank 1, an acidification tank 2, a sulfuric acid head tank 3, a reduction reaction tank 4, a charging hopper 5, a neutralization tank 6, a sedimentation tank 7, a polyacrylamide charging tank 8 and a filter 9 are arranged.
Detailed Description
As shown in the figure, a heavy metal wastewater treatment device, including waste water equalizing basin 1, acidizing tank 2, sulphuric acid elevated tank 3, reduction reaction tank 4, neutralization pond 6 and sedimentation tank 7, waste water equalizing basin 1 delivery port links to each other with acidizing tank 2, sulphuric acid elevated tank 3 is located acidizing tank top, 2 delivery ports in acidizing tank link to each other with reduction reaction tank 4, reduction reaction tank top installation loading hopper 5, 4 delivery ports in reduction reaction tank link to each other with neutralization pond 6, 6 delivery ports in neutralization pond link to each other with sedimentation tank 7, 7 top installation polyacrylamide charge tanks 8 in sedimentation tank, sedimentation tank middle part delivery port links to each other with 9 imports of filter.
The utility model discloses a theory of operation is: discharging the heavy metal wastewater into a wastewater adjusting tank, and uniformly mixing; introducing the uniformly mixed wastewater into an acidification tank, adding sulfuric acid through a sulfuric acid head tank for acidification, and controlling the pH value to be about 2.5; introducing the acidified liquid into a reduction reaction tank, and adding sodium bisulfite through a charging hopper to perform reduction reaction; introducing the reduced wastewater into a neutralization tank, adding sodium hydroxide into the neutralization tank for neutralization under the stirring state, adjusting the pH value to 7.5-8.5, then introducing the neutralized water into a sedimentation tank, adding polyacrylamide into the wastewater through a polyacrylamide feeding tank for sedimentation, introducing the wastewater in the middle of the sedimentation tank into a filter after solid-liquid separation of the sediment, and discharging the wastewater after physical adsorption and filtration.
Claims (1)
1. The utility model provides a heavy metal wastewater treatment device, characterized by includes the waste water equalizing basin, the acidizing pond, sulphuric acid elevated tank, the reduction reaction pond, neutralization pond and sedimentation tank, the waste water equalizing basin delivery port links to each other with the acidizing pond, sulphuric acid elevated tank is located the acidizing pond top, the acidizing pond delivery port links to each other with the reduction reaction pond, reduction reaction pond top installation loading hopper, reduction reaction pond delivery port links to each other with the neutralization pond, neutralization pond delivery port links to each other with the sedimentation tank, sedimentation tank top installation polyacrylamide charge tank, sedimentation tank middle part delivery port links to each other with the filter import.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921184925.0U CN210367272U (en) | 2019-07-26 | 2019-07-26 | Heavy metal wastewater treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921184925.0U CN210367272U (en) | 2019-07-26 | 2019-07-26 | Heavy metal wastewater treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210367272U true CN210367272U (en) | 2020-04-21 |
Family
ID=70246734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921184925.0U Active CN210367272U (en) | 2019-07-26 | 2019-07-26 | Heavy metal wastewater treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210367272U (en) |
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2019
- 2019-07-26 CN CN201921184925.0U patent/CN210367272U/en active Active
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